In the wake of the massive Capital One data breach incited by a misconfigured web app firewall, we are throwing in a .NET open source library vulnerability that demonstrates the pervasiveness of privilege escalation attacks across web apps for good measure.
Vulnerability Score: Medium — 6.1 (CVSS v3.0)
Affected versions: 4.5.14
It is a perilous time for ServiceStack users, a widely-used .NET based library.
Such cross-site scripting vulnerabilities are often used by attackers for privilege escalation issues, especially to bypass access controls when two web pages are of the same origin (i.e. two URLs sharing the same protocol, port (if specified), and host).
This unauthorised access could then lead to security breaches such as data theft and password dumping. It is thus imperative that affected frameworks immediately download the patched version in 5.2 or later to avoid sensitive data violations.
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